petepilot
Senior Member
JLG8042 telehandler 06 i believe has no response at all when shifted into second gear all others work `makes no noise. bad relay or bad shift switch?
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no second gear
- Thread starter petepilot
- Start date
tractormech
Senior Member
You may have a bad proximity switch locking out second gear. What's the serial number of the machine? Ill look at a schematic and see what's there. Don't condemn the shifter yet. Does the frame tilt move very slowly? Regardless of if the boom is under 20 degrees or not?
petepilot
Senior Member
0160033895. this is an auction buy i have not done a lot of checking yet` but tilt does seem a little slow and the tracking is a little wonky. showing roughly 4700 hrs.
tractormech
Senior Member
Okay-just to verify-It's an 8042 JLG. Not Skytrak ,Correct? Just want to be certain I'm looking at the right thing.Thanks.
tractormech
Senior Member
Okay-I verified the S/N. It's an 08 Legacy model. Boom angle switch doesn't appear to lock out the shifter. No forward or reverse in second gear?
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petepilot
Senior Member
none either way, and it is skytrak
tractormech
Senior Member
Okay. Skytrak it is. I'll look at some things.
petepilot
Senior Member
been poking around in this thing all afternoon`found 4th gear a little finiky also . swapped out the shift switch with another did not make a difference. i have the panels all off now and am checking all fuses and relays not sure what i`ll find . as for forth gear it will go in and start to move but will drop out if letup on accell.
petepilot
Senior Member
not yet will do more digging today.
tractormech
Senior Member
I did some checking. The boom angle switch does not lock out any gear in the transmission. You can go to the JLG website and download the service manual-it has schematics for the transmission. You'll need to check voltage from the shifter at the solenoids on the transmission. You said you swapped shifters and had the same problem.If voltage is at the solenoids being applied make sure there's a ground for all as well. You may be able to ohm each solenoid to see if you have a bad one.Then maybe swap some around and see if second gear starts working.You'll have to do some digging to find the issue.
petepilot
Senior Member
appreciate your help . im going to download the parts of the manual i need and see what i can find there .from just looking i don`t see any interchangable sels. only 4 wires going in from a 9 wire switch. something tells me we have more than an electrical problem
tractormech
Senior Member
Let us know how its going and if we can help. Good luck!
petepilot
Senior Member
found another group of wires going into trans. but everything is sealed where the shifter valves &solenoids are located i`m going to let someone who knows what he`s looking at go in there.`more than i want to tackle
petepilot
Senior Member
this trans. has a barcoded sticker on it 3 separate groups of #s anything i quoted as a serial # would be only be a guess
Can you get a few decent pics of it? Maybe someone might recognize it.
petepilot
Senior Member
have to get a better camera under there for that phone does`nt cut it may try that tomorrow
petepilot
Senior Member
will do. no mfg. name on it that i could see
tractormech
Senior Member
The manual says it's a 4WG98 ZF